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Torenia Linn.

蝴蝶草属

Description from Flora of China

Herbs, glabrous or villous, rarely hispidulous. Leaves opposite, usually petiolate. Inflorescences racemose or in axillary umbellate fascicles, rarely dichotomous and terminal flowers reduced, or 1-flowered. Flowers pedicellate. Calyx ribbed or winged, often 2-lipped and short toothed, usually 5-lobed. Corolla 2-lipped; lower lip 3-lobed, lobes subequal; upper lip erect, apex entire, emarginate, or 2-lobed. Stamens 4; anterior filaments appendaged or less commonly unappendaged; posterior stamens included; anthers connivent in pairs, locules often apically confluent. Ovary apically usually with short coarse hairs. Style apically 2-lamellate. Capsule oblong, included in persistent calyx, septicidal. Seeds numerous, scrobiculate.

About 50 species: mostly in tropical Africa and Asia; ten species in China.

Lower Taxon


 

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